High-precision magnetic position encoder

Abstract

The utility model relates to the technical field of encoders, in particular to a high-precision magnetic position encoder, which comprises an encoder shell, the encoder shell comprises a shell group and a hole group, the hole group is arranged on the shell group, and air inside and outside the shell group can be exchanged through the hole group; the blocking part is positioned in the encoder shell and is used for preventing external foreign matters from entering; the supporting part is fixedly arranged at the bottom of the encoder shell and is used for fixing the encoder shell; according to the utility model, the heat of the encoder can be effectively dissipated; and meanwhile, the blocking part is arranged in the ventilation hole, so that sundries carried in the entering process of airflow can be effectively prevented from entering the interior of the housing of the encoder.

Description

TECHNICAL FIELD

[0001] The utility model relates to encoder technical field especially to a high accuracy magnetic position encoder. BACKGROUND

[0002] High accuracy magnetic position encoder is a kind of high-tech sensor for measuring displacement, angle, which integrates optical, mechanical and electrical precision technology. High accuracy magnetic position encoder measures by magnetic field principle, and the angle or displacement value of the changing magnetic material is measured by magnetic resistance or magnetic sensitive element. When the angle or displacement of the magnetic material changes, the resistance or voltage of the magnetic resistance or magnetic sensitive element changes, and this change is captured by the sensor and converted into an electrical signal, and the position or angle data is obtained after further processing,

[0003] High accuracy magnetic position encoder is widely used in steering engine. When high accuracy magnetic encoder is used to control steering engine, the noise generated by steering engine is almost none, and the control angle is very accurate.

[0004] However, the traditional high accuracy magnetic position encoder has a large number of internal components, and the heat generated by these components during work will be concentrated in the high accuracy magnetic position encoder shell, which cannot be effectively dissipated in a short time. Moreover, the design of the heat dissipation hole structure of the general encoder cannot effectively block the foreign matter from entering the internal. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a high accuracy magnetic position encoder to solve the problem that the traditional high accuracy magnetic position encoder has a large number of internal components, and the heat generated by these components during work will be concentrated in the high accuracy magnetic position encoder shell, which cannot be effectively dissipated in a short time. Moreover, the design of the heat dissipation hole structure of the general encoder cannot effectively block the foreign matter from entering the internal.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, a high accuracy magnetic position encoder is provided, which comprises: an encoder shell, the encoder shell comprises a shell group and a hole group, the hole group is arranged on the shell group, and the air inside and outside the shell group can be exchanged through the hole group;

[0007] A blocking part is arranged inside the encoder shell to prevent foreign matter from entering.

[0008] A supporting part is fixedly arranged at the bottom of the encoder shell to fix the encoder shell.

[0009] Further, the shell group comprises a shell, a bottom plate and a top plate, the bottom plate is fixedly arranged at the bottom of the shell, and the top plate is fixedly arranged at the top of the shell.

[0010] Further, the hole group comprises a plurality of guide grooves, a plurality of first air exchange holes, a plurality of second air exchange holes and a top hole, the guide grooves are distributed on the inner wall of the shell, and the guide grooves are inclined by 10-20°.

[0011] Further, the first air exchange holes are all arranged on the bottom plate, the second air exchange holes are all arranged on the top plate, and the top hole is arranged in the middle part of the top plate.

[0012] Further, the blocking part is located inside the first air exchange hole and the second air exchange hole, the blocking part comprises two left-right symmetrical blocking pieces, each blocking piece is composed of a first blocking strip and a second blocking strip, and the first blocking strip and the second blocking strip are fixedly connected and form a V-shaped structure.

[0013] Further, the first blocking strip and the second blocking strip are provided with air holes at the position where the first blocking strip and the second blocking strip are connected to each other, so that air flows through the air holes.

[0014] Further, the supporting part comprises a supporting plate, a supporting column and a plurality of screw holes, the supporting column is fixedly arranged at the bottom of the outer side of the shell, the supporting plate is fixedly arranged at the bottom end of the supporting column, and the screw holes are all arranged on the supporting plate.

[0015] Compared with the prior art, the present application has the following advantages: the present application can effectively dissipate the heat of the encoder, and the blocking part arranged in the air exchange hole can effectively prevent the sundries carried by the airflow from entering the inside of the encoder shell. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole schematic view of the present application;

[0017] Figure 2 It is a schematic view of the structure of the encoder shell of the present application;

[0018] Figure 3 It is a schematic view of the structure of the blocking part of the present application;

[0019] Figure 4 It is a schematic view of the structure of the blocking part of the present application; Figure 3 It is an enlarged schematic view of the middle part structure of the present application.

[0020] ILLUSTRATIVE DESCRIPTION

[0021] 1, encoder shell; 11, shell; 12, guide groove; 13, bottom plate; 14, first air exchange hole; 15, top plate; 16, second air exchange hole; 17, top hole;

[0022] 2, blocking part; 21, first blocking strip; 22, second blocking strip; 23, first blocking area; 24, second blocking area; 25, air hole;

[0023] 3, support part; 31, support plate; 32, support column; 33, screw hole. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0025] Please refer to Figures 1 to 4 The embodiment provides a high-precision magnetic position encoder, which comprises an encoder shell 1, the encoder shell 1 comprises a shell group and a hole group, the hole group is arranged on the shell group, and air inside and outside the shell group can be exchanged through the hole group.

[0026] A blocking part 2 is located inside the encoder shell 1 and is used for preventing foreign matters from entering.

[0027] A support part 3 is fixedly arranged at the bottom of the encoder shell 1 and is used for fixing the encoder shell 1.

[0028] The shell group comprises a shell 11, a bottom plate 13 and a top plate 15, the bottom plate 13 is fixedly arranged at the bottom of the shell 11, and the top plate 15 is fixedly arranged at the top of the shell 11.

[0029] The hole group comprises a plurality of flow guide grooves 12, a plurality of first air exchange holes 14, a plurality of second air exchange holes 16 and a top hole 17, the flow guide grooves 12 are distributed on the inner wall of the shell 11, the flow guide grooves 12 are inclined by 10-20 degrees, preferably 15 degrees in the embodiment, so that the speed of hot air flowing along the inclined flow guide grooves 12 is accelerated, and the heat dissipation speed is improved.

[0030] The first air exchange holes 14 are all arranged on the bottom plate 13, cold air enters the inside of the shell 11 through the first air exchange holes 14, the second air exchange holes 16 are all arranged on the top plate 15, hot air flows out through the second air exchange holes 16, and the top hole 17 is arranged in the middle of the top plate 15.

[0031] The blocking part 2 is located inside the first air exchange hole 14 and the second air exchange hole 16, the blocking part 2 comprises two left-right symmetrical blocking pieces, each blocking piece is composed of a first blocking strip 21 and a second blocking strip 22, the first blocking strip 21 and the second blocking strip 22 are fixedly connected and form a V-shaped structure, and the position, where the first blocking strip 21 and the second blocking strip 22 are connected to each other, is provided with an air hole 25 for airflow.

[0032] The first barrier 21, the second barrier 22 and the hole wall of the air hole form the first barrier area 23, the two second barriers 22 form the second barrier area 24, the cross section of the first air hole 14 and the second air hole 16 are Z-shaped, the blocking part 2 is arranged at the middle vertical section of the Z-shaped air hole, the air flow enters from the bottom entrance, part of the air flow is blocked when entering the second barrier area 24, the sundries carried by the air flow is blocked and falls down, part of the air flow enters the first barrier area 23, the sundries falls down due to the blocking of the first barrier 21, the air flow turns back along the inclined first barrier 21 and then converges into the air hole 25 and enters the space above the blocking part 2 from the air hole 25, finally enters the encoder shell 1 from the top outlet of the air hole, thus the sundries carried by the air flow during the entering process can be effectively prevented from entering the encoder shell 1.

[0033] The support part 3 comprises a support plate 31, a support column 32 and a plurality of screw holes 33, the support column 32 is fixedly arranged at the bottom of the outer side of the shell 11, the support plate 31 is fixedly arranged at the bottom end of the support column 32, and the screw holes 33 are all arranged on the support plate 31.

[0034] The screw is inserted into the corresponding screw hole 33, the encoder is fixed on the object through the support plate 31 and the support column 32, the air is sucked into the shell 11 from the first air hole 14, the air is spirally forwarded by the inclined first air hole 14, is guided through the flow guide groove 12, moves forward quickly, then passes through the second air hole 16, the air flow is guided again by the inclined second air hole 16, the flow rate is accelerated, the internal heat of the encoder is taken away, and the shell 11 is quickly discharged; the air flow enters from the bottom entrance of the air hole, part of the air flow is blocked when entering the second barrier area 24, the sundries carried by the air flow is blocked and falls down, part of the air flow enters the first barrier area 23, the sundries falls down due to the blocking of the first barrier 21, the air flow turns back along the inclined first barrier 21 and then converges into the air hole 25 and enters the space above the blocking part 2 from the air hole 25, finally enters the encoder shell 1 from the top outlet of the air hole, thus the sundries carried by the air flow during the entering process can be effectively prevented from entering the encoder shell 1.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, although the present application has been disclosed as above with a preferred embodiment, however, it is not intended to limit the present application, any person skilled in the art, without departing from the technical scheme of the present application, can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, but as long as it does not deviate from the technical scheme of the present application, any modification, equivalent change and modification of the above embodiment according to the technical essence of the present application, all still belong to the scope of the technical scheme of the present application.

Claims

1. A high-precision magnetic position encoder, characterized in that The utility model provides an encoder shell, which comprises a shell group and a hole group, air inside and outside the shell group can be exchanged through the hole group, a blocking part (2) is arranged inside the encoder shell (1) to prevent foreign matters from entering, and a supporting part (3) is fixedly arranged at the bottom of the encoder shell (1) to fix the encoder shell (1). The shell group comprises a shell (11), a bottom plate (13) and a top plate (15), the bottom plate (13) is fixedly arranged at the bottom of the shell (11), and the top plate (15) is fixedly arranged at the top of the shell (11). The hole group comprises a plurality of guide grooves (12), a plurality of first air exchange holes (14), a plurality of second air exchange holes (16) and a top hole (17), the guide grooves (12) are arranged on the inner wall of the shell (11), and the guide grooves (12) are inclined by 10-20 degrees. The first air exchange holes (14) are arranged on the bottom plate (13), the second air exchange holes (16) are arranged on the top plate (15), and the top hole (17) is arranged in the middle of the top plate (15).

2. The high precision magnetic position encoder of claim 1, wherein, The blocking part (2) is arranged inside the first air exchange holes (14) and the second air exchange holes (16), the blocking part (2) comprises two left-right symmetrical blocking pieces, each blocking piece is composed of a first blocking strip (21) and a second blocking strip (22), the first blocking strip (21) and the second blocking strip (22) are fixedly connected and form a V-shaped structure.

3. The high precision magnetic position encoder of claim 2, wherein, The first blocking strip (21) and the second blocking strip (22) are arranged with air holes (25) at the position where they are connected to each other, so that air can pass through.

4. The high precision magnetic position encoder of claim 3, wherein, The supporting part (3) comprises a supporting plate (31), a supporting column (32) and a plurality of screw holes (33), the supporting column (32) is fixedly arranged at the bottom of the outer side of the shell (11), the supporting plate (31) is fixedly arranged at the bottom end of the supporting column (32), and the screw holes (33) are arranged on the supporting plate (31).

5. The high precision magnetic position encoder of claim 4, wherein, ​ 6. The high precision magnetic position encoder of claim 5, wherein, ​ 7. The high precision magnetic position encoder of claim 6, wherein, ​

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